I would like to offer special thanks to Omar Badsha, Franco Frescura and Gavin Younge for the information and material they provided to me. Most importantly, however, I wish to thank my mother, Doris Clark, for her unfailing faith in me, and Michael Chapman who listened to my ideas with enthusiasm and gave me considerable moral support. Thanks must also be extended to the Human Sciences Research Council (HSRC) for the grant awarded to me.

I also wish to state that this study is entirely my own original work, and that where I have drawn on the work of others I have given the source full acknowledgement and details of reference.